Blog of current mindstate in Architecture, Urbanism & Research
Reblogged from mapsontheweb  143 notes
mapsontheweb:

Percentage of slaves in the US over time, 1790-1860.
Data source: US Census data hosted by NHGIS.org, the National History GIS project at the University of Minnesota.
NHGIS is a great resource for historical GIS research on the US, and I can’t recommend it highly enough.

mapsontheweb:

Percentage of slaves in the US over time, 1790-1860.

Data source: US Census data hosted by NHGIS.org, the National History GIS project at the University of Minnesota.

NHGIS is a great resource for historical GIS research on the US, and I can’t recommend it highly enough.